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Regurgitant Flow Rate
Mitral Regurgitation
Calcs>Mitral Regurgitation>RFR>1
VA cm/sec
Angle degrees
Heart Rate bpm
RFR ml/min

Regurgitant Flow Rate

How to get a Regurgitant Flow Rate in Mitral Regurgitation.
Step 1:  Obtain a CFD of the MR Jet with a good PISA formation under zoomed view.  The midesophageal view with a good quality, largest PISA formation should be used.
Step 2: Measure the Diameter of the PISA radius. The radius is from the center of the PISA formation, typically from the center of the valve, to the first aliasing velocity.  If the PISA is small, try slightly decreasing the aliasing velocity (VA) which will increase the size of the PISA formation.
Step 3: Obtain the angle of the PISA formation. The angle is typically 180 degrees.

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